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Piet Gömpel

PROFILE

Piet Gömpel

Worked extensively on the EVerest/everest-core repository, delivering robust backend features for EV charging infrastructure with a focus on OCPP protocol reliability, configuration management, and security. Leveraged C++ and Python to implement modular architecture, optimize certificate handling, and unify configuration storage across protocol versions. Introduced concurrency improvements using SQLite WAL mode, enhanced test automation, and consolidated shared logic into reusable libraries. Addressed runtime stability by refining error handling, memory management, and state machine design. Contributed to governance and documentation, establishing migration paths and deprecation policies. The work emphasized maintainability, cross-version compatibility, and reliable integration for evolving EV charging requirements.

Overall Statistics

Feature vs Bugs

70%Features

Repository Contributions

53Total
Bugs
8
Commits
53
Features
19
Lines of code
1,022,185
Activity Months8

Work History

July 2026

8 Commits • 3 Features

Jul 1, 2026

July 2026 monthly summary: Focused on reliability, cross-version OCPP support, and governance hygiene. Implemented cross-version connectivity management with an abstract ConnectivityManagerConfiguration, enabling v2 (DeviceModel) and v16 (ChargePointConfigurationConnectivity) paths, added v16 config keys, refined websocket ping interval handling, and exposed external configuration of RetryBackoffRandomRange for OCPP 1.6. Introduced a start_connecting flag to defer websocket initialization when appropriate. Stabilized firmware updates by introducing ResetDelay in the System module to ensure the Installed status is processed before hard resets, reducing race-conditions and flaky tests. Consolidated shared OCPP logic into a new ocpp_module_common library, centralizing conversions, transactions, error handling, and device model storage to improve maintainability and reuse. Strengthened documentation and governance: cleaned up docs, updated CODEOWNERS for RpcApi, and introduced a deprecation policy with an experimental component framework for the public API. Business value: improved reliability for firmware updates, robust cross-version connectivity, faster onboarding of new OCPP variants, and clearer governance for API evolution; performance impact includes more predictable behavior and reduced maintenance burden.

June 2026

7 Commits • 5 Features

Jun 1, 2026

June 2026: Focused on reliability, concurrency, and configuration hygiene in Everest core. Delivered significant OCPP lifecycle improvements, modernized SQLite concurrency via WAL, and unified the OCPP configuration storage with migration support. Also fixed critical StopTransaction flow when in-memory data is unavailable and addressed a memory-leak path in SSL_CTX management. Added a new PlugEventsLIFO connector-selection algorithm and introduced CI/CD automation for backport labeling to speed up releases.

May 2026

8 Commits • 2 Features

May 1, 2026

May 2026 monthly summary for EVerest/everest-core focusing on delivering business value through robust certificate handling, reliable messaging, and modular infrastructure improvements. Highlights include performance and reliability gains in the certificate flow, stability enhancements in MQTT messaging, and significant test/infra refactors enabling reuse and faster integration across OCPP versions.

April 2026

20 Commits • 5 Features

Apr 1, 2026

2026-04 Monthly Summary: Delivered substantive OCPP and config improvements, strengthened test infrastructure, and enhanced runtime reliability while advancing governance and build/test hygiene. The work advanced pricing accuracy, device capability reporting, and fleet-level resilience through robust exception handling, parallelized test execution, and stable runtimes. A clear migration path was established with deprecation guidance for the legacy libocpp repo, aligning ongoing development with the main EVerest repository.

March 2026

3 Commits • 1 Features

Mar 1, 2026

March 2026 focused on strengthening EV charging protocol reliability, ISO15118 compliance, and robust transaction handling in the everest-core stack. Key work included protocol-agnostic HLC session failure reporting, ISO15118 power limit scheduling enhancements, and a fix to prevent delayed authorization from bypassing external cancellations. The changes improved fault visibility, ensured more accurate power allocation, and reduced risk of stranded transactions across charging sessions.

March 2025

1 Commits

Mar 1, 2025

Monthly work summary for 2025-03 focused on improving robustness and stability of security-critical components in the Everest core.

February 2025

5 Commits • 2 Features

Feb 1, 2025

February 2025 Monthly Summary: Focused on standardizing versioning, improving protocol robustness, and hardening certificate validation across two core repositories (EVerest/libocpp and EVerest/everest-core). The work drives maintainability, security, and reliability for OCPP deployments while delivering concrete improvements to developer onboarding and runtime behavior.

December 2024

1 Commits • 1 Features

Dec 1, 2024

December 2024: Delivered a targeted Architecture Refactor of EnergyManager with EnergyManagerImpl to decouple core optimization logic from the wrapper, complemented by a JSON-based unit test framework to boost testability and maintainability. Migrated existing C++ unit tests to a JSON input/expected-output format, enabling easier test case management and faster regression cycles. This work strengthens the robustness of energy optimization features and accelerates future development.

Activity

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Quality Metrics

Correctness94.2%
Maintainability88.4%
Architecture89.8%
Performance86.0%
AI Usage34.2%

Skills & Technologies

Programming Languages

C++CMakeJSONMarkdownPlantUMLPythonSQLShellYAMLreStructuredText

Technical Skills

API DevelopmentAPI GovernanceAPI designAPI developmentBackend DevelopmentBazelBuild SystemsC++C++ DevelopmentC++ developmentC++ programmingCI/CDCMakeCode OrganizationCode Standardization

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

EVerest/everest-core

Dec 2024 Jul 2026
8 Months active

Languages Used

C++CMakeJSONPythonMarkdownShellYAMLreStructuredText

Technical Skills

RefactoringSoftware ArchitectureTest-Driven Development (TDD)Unit TestingBuild SystemsC++

EVerest/libocpp

Feb 2025 Apr 2026
2 Months active

Languages Used

C++CMakeMarkdownPlantUMLSQLJSONShell

Technical Skills

C++C++ DevelopmentCode OrganizationCode StandardizationDocumentation UpdateEmbedded Systems